Chucking mechanism



E. P. LINDAHL.

CHUCKING MECHANISM.

APPLICATION FILED DEC.29, 1919.

1,390,627. PatentedSept. 13,1921.

3 SHEETSSHEET 2.

E. P. LINDAHL. CHUCKING MECHANISM. APPLICATION FILED nc.29, 1919.

Patented Sept. 13, 1921.

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UNITED STATES PATENT OFFICE.

ERICK P. LINDAHL, OF CINCINNATI, OHIO, ASSIGNOR TO THE ICY-HOT BOTTLE COM- PANY, OF CINCINNATI, OHIO, A CORPORATION OF WEST VIRGINIA.

CEUCKING' MECHANISM.

Specification of Letters Patent. Patented Sept. 13, 1921.

Original application filed October 14, 1918, Serial No. 257,999. Divided and this application filed December 29, 1919. Serial No. 348,028.

To all whom it may concern:

Be it known that I, ERICK P. LINDAHL, a citizen of the United States, residing at Pleasant Ridge, in the city of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Chucking Mechanism, of which the following is. a specification.

My invention is applicable in various relations in which it is desired to secure articles in predetermined positions for operation thereon by suitable mechanism, and

is especially applicable for securing articles which it is desired to center with relation to tools or devices intended to operate thereon.

My present invention is a division of my copending application, filed in the United States Patent Ofiice, October 14, 1918-, Serial No. 257,999, for patent on improvements in method of and apparatus for manufacturing glassware, in which latter application the chucking mechanism herein shown, described and claimed is also shown and described, in connection with one of the relations in which my present invention may be employed.

It is the object of my invention to provide novel means whereby to hold articles or blanks on which it is desired to operate; further, to provide novel means to relatively secure the respective members of articles or blanks comprising a plurality of such members, on which it is desired to operate when placed in predetermined relation; further, to provide new and improved means for maintaining articles or blanks in centered positions about their axes of rotation; further, to provide novel means for longitudinally supporting articles or blanks; and, further, to provide novel means whereby to maintain the respective members of articles or blanks in longitudinally positioned and centered relations.

My invention consists in novel means for accomplishing these objects.

The invention will be further readily understood from the following description and claims, and from the drawings, in which latter:

Figure 1 is a side elevation of an exemplified mechanism embodying my invention,

and showing an article or blank partly broken away.

Fig. 2 is an edge elevation of the same, partly broken away.

Fig. 3 is a plan view of the same in closed relat1on.

Fig. 4 is a similar view of the same in open relation, and showing the spring recelving pockets thereon in axial section.

Fig. 5 is a vertical axial section of the same, taken on the line 5-5 of Fig. 3.

Fig. 6 is a detail of the clamping means for the article or blank, shown in vertical section on the irregular line 6-6 of Fig. 4.

Fig. 7 is a horizontal cross-section showing a detail, taken on the line 7-7 of Fig. 5.

Fig. 8 is a plan section taken in of the line 88 of Fig. 5.

Fig. 9 is an enlarged vertical axial section taken on the line 5--5 of Fig. 3, showing the suction passages communicating with the article or blank sup ort.

Fig. 10 is a vertical axia section of the same, taken on a line corresponding to the line 10--10 of Fig. 9, with the lower part omitted; and,

Fig. 11 is a vertical axial section showing the suction connection withthe suction supply passage, taken on a line corresponding to the line 10--10 of Fig. 9.

The article being treated is represented as consisting of an inner member 21 and an outer member 22, which are manipulated to form respectively the inner wall and the outer wall of a vacuum insulated bottle, the walls having a space 23 between them, there being suitable separators 24, instanced as located between the members for forming said space and holding the members in rela tively separted relation.

My invention is especially applicable for operation on double walled vessels which may comprise glass or frangible inner and outer walls employed for instance in vacuum containers, such as vacuum insulated bottles, carafes, and the like, for example of the character of those shown and described in Letters Patent No. 921,099, granted George P. Altenberg, assignee on an application filed by Emil Fleishauer for improvein position,

the plane ments in double walled vessel, and No. 1,218,036, granted George P. Altenberg, for improvements in carafe and easing therefor and dated respectively May .11, 1909, and March 6, 1917. '7

The inner member is exemplified as provided with a rounded bottom 25. The outer member is shown as bottomless but having a skirt 26, which afterward is formed into an outer'bottom about the rounded bottom 25. The space;23 is in a subsequent operation exhausted to form the vacuum between said walls. I shall hereinafter refer to the article held or operated on as a blank, desig nated by the general numeral 27, it-being understood that the invention is not limited to the parts shown and described, or assembled in the manner shown and described, the invention being applicable to any character of blank'.

A suitable carrier may be provided on which the blanks are arranged to be moved into juxtaposition with suitable tools or devices designed to operate on the blanks, a portion of said carrier being exemplified at 31, although the numeral 31 may designate any suitable support or frame on which the mechanism is mounted, and said part will be application of which this is a division.

The chucking mechanism is exemplified generally at 41 and is exemplified as fixed to a vertical shaft 42, journaled in bearings 43 of the support,'and held in endwise relation in said bearings by means of the base of the chuck and a bevel-gear 44 fixed to said shaft, and bearing against the respective ends of one of the bearings 43. Bevelgear 44 meshes with the bevel-gear 38.

The chucking mechanism is exemplified as provided with means for permitting shifting of the blank in the chuck whereby to permit centering of the walls of the blank with relation to each other and to permit centering of the blank with relation to its axis of rotation, and with means whereby the longitudinal relation of the inner and outer members of the blank is fixed, in order that the portions of the blank which are to be operated on, for instance the mouth-edges of "the walls: of the same which are to be united,- have a definite relation and have a definite path of rotation.

The chuck comprises a base 51, from whichstandards 52 extend upwardly. The

base is shown provided with a passage 53, and with a valve 54 for said passage. This passage communicates with a passage in the vertical shaft 42, this vertical shaft being shown as a hollow shaft. There is a coupling 56 under the vertical shaft which has a passage 57 therethrough, the latter passage communicating with the passage in the vertical shaft by means of a conical joint 58, permitting rotation of the shaft with relation to the coupling. The coupling is resiliently held toward the shaft 12 by being seated in a seat 59 of a spring-clip (50 secured to the support 31. The seat encompasses the coupling preferably in manner to prevent its rotation.

A tube 61 extends from the coupling 56 and connects with a suitable source of suction or vacuum for normally causin suction or vacuum in the passages 57, and 53. The tube is preferably a flexible tube.

The chucking mechanism further comprises a support 71, shown as a pedestal, having a passage 72 therethrough, connect ing with the source of suction or vacuum. The support comprises a suction-chuck 73, comprising a cup 7 4, in which there is a seat 75 for the inner member of the blank, this seat being preferably of cushion material, for instance of leather or rubber, and having a concave recess 76, in which the rounded bottom of the inner member of the blank is arranged to be received, the recess in the seat being preferably deeper than the portion of th blank received therein so that the wall of the recess may throughout its preferably flexible annular blank-contacting edge have close contact made therewith by the blank. The passage 72 communicates with this recess.

The lower skirt ends of the outer members of the blanks are in practice often of irregular form. It is desirable that the axial relation between the inner and outer members of the blank shall be maintained when poon, to permit the blank to rock laterally. l

arranged to receive the edge of the skirt 26 of the outer member of the blank. The plate 81 rocks on pins 84 on a plate 85. The plates 81 and 85 respectively have cars 86,

87, in which the pins are received. The 11-;0

plate 85 is supported on links 89, 90, shown as wires, having articulations 91 between them, the articulations being formed by the ends 01 said wires. The upper ends of the links are supported from the upper ends of the standards 52 by means of springs 92, shown as helical springs, the respective ends of which are connected with the standards and the links 89.

The links 90 pass through openings 93 in the cushion 82 and plate 81, and have connections with the plate 85, as by meansof nuts 94 threaded about the lower threaded ends 95 of the links 90, thus providing adjustment for normal position of the plate 85.

Clamps 101 are provided for fixing the links in assumedpositions, and thereby fixing the position of the support for the outer member with relation to the inner member of the blank. The clamps have their respective clamping faces on the standards 52 and on levers 102. The levers are pivoted at d103 to ears 104 extending from the standar s.

The levers 102 are provided with camfaces 105, with which cams 106 coact for clamping the clamps 101 upon the wires received through said clamps, the clamp faces being provided with suitable grooves 107 in which the wires are held. The cams 106 are on the stem of the valve 54. The cams and valve are arranged to be operated by a handle 108.

The chucking mechanism is provided with means for holding and permitting adjustment of the month end of the blank, exemplified as a clamp 115, represented as comprising segments 116, 117, connected by a hinge 118 for permittin swinging of one segment on the other, whereby 'to open the clamp and permit insertion and removal of the blanks. WVhen the blank is inserted, the

clamp is arranged to be closed and to be held in closed pos1t1on by means of a clasp ing the segments together at the clasp and for readily opening the same. The clamps preferably rotate with the hinge'end of the segment 117 moving in advance of the claspengaging end thereof, for ease in closing the clamp and to prevent accident.

The segments are provided with shoes 130 on stems 131 received in pockets 132 in the segments. Springs 133 in the pockets impinge pins 134 on the stems, urging the shoes toward the blank in the clamp. The pins are received in slots 135 in the walls of the pockets for limiting their endwise move ments and holding the shoes in proper relation with the blank.

When the clamp 115 is clamped about the blank, the shoes are arranged to contact the blank so as to firmly hold the blank within the segments when the segments are clasped together, and thereby centrally position the blank in the clamp. The springs 133 exert firm pressure by the shoes upon the blank, but are sufficiently yieldable to prevent breakage of the blank.

The clamp 115 forms a slide which has sliding relation with the body of the chuck, this sliding being resisted preferably by friction of less resistance than the resistance of the coacting springs 133, so as to permit shifting of the slide upon the body of the chuck without derangement or movement of the shoes on said slide, whereby the definite relation between the blank and the slide fixed by said shoes is maintained, and any shifting which is caused, for instance, by a suitably centering device, takes place by a shiftin oi the slide.

The hinge 118 of the segment-s comprises a bushing 136, through which there is a recess 137. There is a recess 138 in the segment 116. Friction-plates 141 bear on the slide and are provided with pockets 142, in which springs 143 are located. Bolts 144 are threaded into threaded openings in flanges 145 of the standards 52, jam-nuts 146 being threaded about the ends of the bolts. The springs 143 are received between the heads of the bolts and the bottoms of the pockets, and urge frictional engagement between the friction plates 141 and the slide and between said slide and the flanges 145. The recesses 137, 138, are of substantial area with relation to the bolts 144 to permit lateral shifting between said slide and the body of the chuck in all directions.

When a blank is to be inserted, it is moved into the chuck until the rounded bottom of the inner member is seated in the seat 75. The bottom end of the outer member has meanwhile contacted the cushion on the rockable plate 81 for rocking this plate to .cause it to conform to the bottom end of the outer member, and to move axially, resisted by the tension of the springs 92, to move the plates 81, 85, axially of the blank, the plates yielding readily so as to cause no derangement between the inner member and the outer member of the blank, it being understood that the members are preferably assembled in proper relation prior to being placed in the chuck.

The seating of the rounded bottom of the inner member in the seat of the chuck acts to center the bottom end of the blank with relation to the chuck. The segments are then closed for closing the slide 115 at a position nearer the mouth end or" the blank than said rounded bottom, so that the sliding movement of the slide will permit lat eral shifting of the month end of the blank.

Valve 54 is then opened, whereby to connect the suction or vacuum with the seat 75, to draw the inner member securely to its seat, and to clamp the clamps 101 about the tension members 89, whereby the supports for the inner member and outer member are relatively fixed.

Suitable centering means are now preferably employed to center the upper or out wardly extending ends of the walls of the blank with relation to their axes of rotation, such means being shown and described in my aforesaid co-pending application.

The centering means may be employed for instance for centering the blank and for centering the inner member and outer member with relation to each other so as to locate the mouth ends of the inner member and outer member concentric. The space 23 between the members is determined by the separators 2d. There are preferably three of these separators arranged about the circumference of the inner member.

The separators are preferably so arranged as to act as fulcrums on which the inner and outer members relatively pivot when relatively centering said members to arrange the walls of the members relatively concentric, the clamp and the centering means being respectively below anc. above said separators when acting on the blank. The centering device may comprise inner contactparts and outer contact-parts, so arranged as to cause equal contact between the inner contact parts and the inner face or": the mouth-end oi the inner member and between the outer contact parts and the outer face axis of rotation oi the blank.

The centering device is so positioned with relation to the shaft l2 that the axis of the stem of the centering device, which determines its centering position and the axis of rotation oi the shaft l2 are coincident, whereby the center of the centering device is coincident with said axis of rotation, all as more fully shown and described in my aforesaid pending application.

When the finished blankis to be dis charged, the valve 5% is closed so as to shut off the suction or vacuum from the chuck. The closing of this valve also releases the clamps 101. The clasp 119 is released, and the segment 117 swung on its pivot. The removal of the blank is then readily accomplished. Upon removal of the blank the operation.

The blank is preferably arranged to be inserted into the chucking mechanism when the support 31 thereof is in at-rest position, at which time the chuck also preferably has erased its rotation, due to temporary inactive relation of the driving shaft 36, the atrest relations of the chucking mechanism being also preferably prevailing when the blank is removed from the chucking mechanism after the operation or operations have been performed thereon.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In chucking mechanism of the character described, the combination of a blank holding means comprising a clamp and a plate so mounted that the clamp may be shifted late ally with relation to the plate and the plate rocked with relation to the clamp by pressure of a blank within the holding means.

2. In. chucking mechanism of the character described, the combination of a blankholding means comprising a clamp, 21 rockable plate, and yielding means for the latter,

so mounted and arranged that the plate may be rocked and may yield with relation to the clamp by pressure of a blank within the holding means.

3. In chucking mechanism oi the character described, the combination of a blankholding means comprising a shilitable clamp and a yielding rockablc plate, so mounted that the clamp may be shifted laterally with relation to the plate and the plate rocked and caused to yield with relation to the clamp by pressure of a blank within the holding means.

l. In chucking mechanism oi the character described, the combination of blankholding means comprising a shittablc clamp and a rockable plate so mounted that the clamp may be shifted laterally with relation to the plate and the plate rocked with relation to the clamp by pressure of a blank within the holding means, and locking means to lock said rockable plate.

5. In chucking mechanism for a blank, the combination of a yieldable clamp comprising clamping shoes and resilient means acting on said shoesin clamping said blank, so mounted that the clamp may be shifted by lateral pressure of a blank within the clamp, the resistance of said resilient means to pressure by said blank being greater than the resistance to the yielding of said clamp.

6. In chucking mechanism of the character described, a blank-holding means for a blank comprising an inner member and an outer member, said blank-holding means comprising a support for said inner member, a yieldable rockable support for said outer member, and securing means for said support.

7. In chucking mechanism of the character described, a blank-holding means for a blank comprising an inner member and an outer l (l l) member, said blank-holding means comprising a support for said inner member, a yieldable rockable support arranged to yield to and be rocked by said outer member in relation to said first-named support in positioning said blank, and means for securing said second-named support in actuated relation to said l'll'btdlilmed support.

8. In chuckingmechanism of the character described, a blank-holding means for a blank comprising an inner member and an outer member, said blank-holding means comprising a support for said innermember, a yieldable rockable support arranged to yield to and be rocked by said outer member in positioning said blank, means for securing said last-named support in actuated relation, and clamping means for said outer member.

9. In chucking mechanism of the character described, a blank-holding means for ablank comprising an inner member and an outer member, said blank-holding means comprising a support for said inner member, a yield able rockable support arranged to yield to and be rocked by said outer member in positioning said blank, means for securing said last-named support in actuated relation, clamping means for said outer member, and means for lateral shifting of said clamping means.

10. In chucking mechanism of the character described, a blank-holding means for a blank comprising an inner member and an outer member, said blank-holding means comprising a suction-chuck for one end of said inner member and a slidable clamp for said outer member distanced from said suction-chuck, said slidable clamp mounted to be moved by said outer member.

11. In chucking mechanism of the character described, blank-holding means for a blank comprising an inner member and an outer member havin separating means therebetWeen distance from the respective ends of said members to form a space between said members, said blank-holding means comprisin a suction-chuck for said inner member an a slidable clamp for said outer member at the respective sides of the position of said separating means, said slidable clamp mounted to be moved by said outer member.

12. In chucking mechanism of the character described, a blankholding means for a blank comprising an inner member and an outer member, said blank-holding means comprising a suction-chuck for one end of said inner member, a yieldable plate for the same end of said outer member, means for clampingly holding said late in yielded position, and a slide-clamp or said outer member distanced from said suction-chuck and late. P 13. In chucking-mechanism, a blank-holdg e ns vfor a blank c mp g a 111 member and an outer member, said blankholding means comprising a suction chuck for one end of said inner member, a suctionpassage therethrough, a plate for the same end of said outer member, yielding means for yieldingly supporting said plate, clamping means for the latter, a valve for said passage, and means on the movable member of said valve for operating said clamping means. 7

14. In chucking mechanism, a blank-holding means for a blank comprising an inner member and an outer member, said blankholding means comprising a suction-chuck for one end of said inner member, a yieldable plate, a rockable plate for the same end of said outer member, means to pivot said rockable plate to said yieldable plate, means for securing said yieldable plate in yielded position, and a slide-clamp for said outer member arranged to coact with said outer member at a point lengthwise of said outer member removed from said first-named ends.

15. In chucking mechanism, a blank-holding means for a blank comprising a inner member and an outer member, said blankholding means comprising a suction-chuck for one end of said inner member, a yieldable plate, a rockable plate for the same end of said outer member, means to pivot said rockable plate to said yieldable plate, means for securing said yieldable plate in yielded position, and a slide-clamp for said outer member arranged to coact with said outer member at a point lengthwise of said outer member removed from said first -named ends, said slide-clamp comprising resiliently mounted shoes coacting with said outer member.

16. In chucking mechanism, a blank-holding means for a blank comprising an inner member and an outer member, said blankholding means comprising a suction-chuck for one end of said inner member, a yieldable rockable support for the same end of said outer member, a clamp for said outer member distanced from said chuck and support, said clamp comprising shoes for contact with the outer member, resilient means acting on said shoes to resist movement of said outer member in said clamp, means for shiftingly mounting said clamp, and resilient means for resisting said shifting, the resistance to movement of said shoes being greater than the resistance to movement of said clamp.

17. In chucking mechanism, a blank-hold ing means for a blank comprising an inner member and an outer member, said blankholding means comprising a suction-chuck for one end of said inner member, a suctionpassage therefore, a valve for said passage, a yielding support, a rockable plate for the same end of said outer member pivoted to n holding means comprising a frame having a base, a suction-chuck in said frame for one end of the inner member, a yieldable plate, linksand springs for supporting said plate from said frame, a rockable plate for the same end of said outer member pivoted to said plate, clamps for said links-pivoted to said frame, said base having a passage for said suction-chuck, and a valve therefor the movable member whereof has meansthereon for operating said clamps.

19. In chucking mechanism, a blank-holding means for a blank comprising an inner member and an outer member, said blankholdingmeans comprising a frame having a base, a suction-chuck in said frame for one end ofthe inner member, a yieldable plate, links and springs for supporting said plate from said frame, a rockable plate for the same end of said outer member pivoted to said plate, clamps for said links pivoted to said frame, said base having a passage for said suction-chuck, a valve therefor the movable member whereof has means thereon for operating said clamps, a clamp on said frame for said outer member, and means for lateral shifting of'said last-named clamp on said frame With relation to said suctionchuck.

20. In chucking mechanism, a blank-holding means for a blank comprising an inner member and an outer member, said blankholding means comprising a frame having a base, a suction-chuck in said frame for one end of the inner member, a yieldable plate, links and springs for supporting said plate from said frame, a rockable plate for the same end of said outer member pivoted to said plate, clamps for said links pivoted to said frame, said base having a passage for said suction-chuck, a valve therefor the movable member whereof has means thereon for operating said clamps, a clamp on said frame for said outer member, said clamp comprising relatively hinged members, closing means for the latter, and resiliently yieldable shoes for the outer member, and means for lateral shifting of said clamp in all directions on said frame with relation to said suction-chuck.

21. In chucking mechanism, a blank-holding means for a blank comprising an inner member and an outer member, said blankholding means comprising a frame having a base, a suction-chuck in said frame for one end of the inner member, a yieldable plate, links and springs for supporting said plate from said frame, a rockable plate for the same end of said outer member pivoted to said plate, clamps for said links pivoted to said frame, said base having a passage for said suction-chuck, a valve therefor the movable member whereof has means thereon for operating said clamps, a clamp on said frame for said outer member, said clamp comprising relatively hinged members, closing means for the latter, and resiliently yieldable shoes for the outer member, means for lateral shifting of said clamp in all directions on said frame with relation to said suction-chuck, and adjustable spring means for resisting said shifting of said clamp.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ERICK P. LINDAHL.

Witnesses DELMA WnRNsINe, JAMES J. FITZIATRICK. 

